Speed-changing device.



S. W. WARDWELL.

SPEED CHANGING DEVICE.

APPLICATION FILED 001a, 1910.

1,075,800. Patented 001114, 1913.

4 SHEETS SHEE\T 1.

Fig. 1.

W/T VESsEe fivmwroe S. W, WARDWELL.

SPEED CHANGING DEVICE.

APPLICATION FILED 00113, 1910.

1 075,800. Patented 0@1;.14,1913. 4 SHEETSSHEET 2.

COLUMBIA PLANOGRAPH 60-. WASHINGTON 0.1:.

S. W. WARDWELL. SPEED CHANGING DEVICE.

APPLICATION FILED 0013, 1910.

1,075,800. Patented 001.14, 1913.

4 SHEETS-SHEET 3.

COLUMBIA PLANOGRAPH cm, WASHINGTON, DC.

S. W. WARDWELL.

SPEED CHANGING DEVICE.

APPLICATION FILED 0013.3, 1910.

1,075,800. Patented Oct. 14, 1913.-

4 SHBETSSHEET 4.

Br M 49. 0 M

A TTOQ/VE) COLUMBIA P'ANOGRAPH CO.,WASHXNGTON. n. c

SIMON W. WARDWELL, 0F PROVIDENCE, RHODE ISLAND.

SPEED-CHANGING DEVICE.

Specification of Letters Patent.

Patented Oct. 14,1913.

AppIication filed October 3, 1910. Serial No. 585,058.

To all whom it may concern:

Be it known that I, SIMON W. VVARDWELL, a citizen of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented a new and useful Improvement in Speed-Changing Devices, of which the following is a specification.

My invention is an improved speed changing device, particularly intended for use with winding machines of the type disclosed in my pending application for Letters Patent, Serial No. 585,059 filed Oct. 3, 1910.

The purpose of my invention is to provide means to secure a uniform and constant speed ratio between the winding spindle and the cam, and for changing that speed ratio by accurate gradations which because of their minuteness are unattainable with gears.

The accompanying drawings, forming part of the following specification represent respectively: Figure 1 a side elevation of my invention; Fig. 2 a plan view of the same; Fig. 3 a winding machine in partial sectional elevation, showing the application and connection of my invention, said section being through the axis of a winding spindle and to the axis of the machine; Fig. 4 a modification.

In general, my device comprises a driving shaft, which actuates the winding spindle, a shaft driven therefrom which is operativcly connected with the cam, a primary train of transmission gears, through which the driving shaft is operated by the driving shaft, and a secondary train of gears actuated through suitable means to modify the transmission action of the primary train. It is to the secondary train of gears that my invention is directed, and particularly to the means for actuating the same.

Referring to Fig. 3, the winding spindle 2 is driven from the vertical shaft 3, which is the driving shaft of my invention, through suitable connections including a driving gear 4;, a gear 5 loosely mounted on the spindle 2, and a clutch 6 to connect the gear 5 with the spindle 2. The cam 7 is driven from the vertical shaft 3 through the device of my invention shown at G, through the primary train of gears 8-9 and 10, and the shaft 35, which is the driven shaft of my invention, and the gear 11 and the annular gear 12 in the cam. The gear 8 is rotatably free of the shaft 3, preferably mounted on the quill or sleeve 18, and through the idler gear 9 connects with the gear 10. The gear 8 has a hub 13 with a transverse clutch groove 141, which is engaged by the tongue 15 of the hub 16 of the gear 17 which is likewise mounted on the quill 18 rotatively free of the shaft 3Fig. 1. Secured to the shaft 3 is a frame 18 having a hub which extends downward about the shaft, forming the quill or sleeve on which the gears 8 and 17 are mounted. In the bearings 19and 20 of said frame'is a shaft 21, on which .is secured a pinion 22 that meshes with the gear 17. On the same shaft is a gear 23 with which meshes a pinion 2a of the shaft 25, said shaft being mounted in a bearing 26 of the frame 26 and having at its top an internal friction member 27. The frame 26 swings on the shaft 21 by the hubs 28 and 29 which straddle the bearings 19 and 20 of the frame 18. The train of gears mounted on the frame 18 is the secondary train above re ferred to. The driving tendency of the shaft 3 is obviously to rotate the cam 7 through the primary train of gears 8-9 and 10 and the driven shaft 35 and other connections, and also to rotate the member 27 through the secondary train of gears 2223 and 2d and their connections. The internal resistance of the secondary train is so great, due to driving very small pinions by large gears, and the resistance of the cam 7 and connected mechanism is so slight, that without any influence brought to bear on the secondary train to prevent rotation, it resists the driving action, while the cam is rotated uniformly at a constant speed.

Where winding is to be effected by laying the yarns in openly coiled, but closely juxtaposed helices, it is necessary that the speed ratio of the cam to the winding spindles be such as to give the desired number of turns in each helix from one end of the package to the other, plus or minus a minute fraction of a turn to compensate for the thickness of the material wound. This small fraction of a turn is known as the gain and varies with the count of the yarn or diameter of the material. It is secured in my device by means of the fixed member 30 which, engaging a revolving member 27, causes the latter to rotate and thereby modify the speed ratio between the shaft 3 and the cam 7 as imparted by the primary train of gears 8-9 and 10 and their connections.

The member 30 is a disk which is mounted on a stand or yoke 31, secured preferably the extremity of which enters a groove 40 The head 41 of the stud 36 in the bushing. holds the disk 30 against the bushing 37, and the disk is withheld from turning on the stud 36 by a pin 42 which is immovably connected with the bushing 37, and enters a hole in the disk 30.

with the disk 30 by the spring 44 which extends from the anchorage 45 on the frame 18 to the bearing 26a of the frame 26, which the trains of gears-described to yield to the resistance of the cam, correspondingly modifying the speed of ratio of the driven shaft 5 35 and connected cam to that of the driving shaft 3 and connected winding spindles, and thus securing the desired gain.

The disk 30 and member 27 engage byi cylindrical surfaces, which condition secures a true driving action over the whole line of contact, which cannot be secured by '1 the use of two engaging cones or of a cone 1j and an adjustable disk or any other devices I which secure gradations of speed by altering the relative position of two engaging elements.

governing or determining disk 3O-1s engaged by the cylindrical 1nterior of the member 27, for there 1s closer proximation to surface contact betweentwo tangent surfaces that curve with each other 1n the same general directlon, than between ripheries.

each other.

shaft 25.

from the anchorage 52 on the counterweight 47 of the frame l8 to the bearing 26a of the frame 26. By using the disks 30 in different sizes, different degrees of gain can be secured. This provision has great practical utility. The member 27 can be accurately made, uniform in size for any number of machines, as can also the disk 30. There fore any number of machines can be made to wind alike within any practical limits of accuracy. When uniform yardage is desired in a lot of packages wound by several machines this is quite essential. Again,

yarns of nominally the same count actuf ally vary in size. If the winding machine The disk 30 is hardened and ground cylin- 'drical, as is also the in-turned edge 43 of 3 the member 27 with which it engages. The member 27 is maintained in engagement j can be set for the nominal count more uniform results are secured than where each spindle is individually adjusted to the yarn wound. To this end, series of disks can be provided, properly sized for difierent counts of yarn, or thicknesses or widths of materials not distinguished by count, and each disk can be marked with the count or size for which it is intended.

A peculiarity of my device is that speed changes are effected by modifying the reaction against the cams resistance to rotation, instead of by changing or adjusting speed varying elements in the primary or direct driving train of gears. The sec ondary train is therefore a variable reaction device.

Without limiting myself to the precise form or arrangement of construction I claim 1. In a speed varying device, the combination with a driving shaft and a driven shaft, and a primary train of gearing to transmit the driving action, of a secondary train of gearing and means acting through said train to modify the transmitting action of the primary train, including a stationary disk 30 having a cylindrical periphery, and a member 27 which revolves about the disk 30 and is turned thereby In my preferred construction the speed; e1ementthe through engagement of an internal surface 43 of the member 27 with the cylindrical periphery of the disk 30.

2. In a speed varying device, the combinathereof, and means to maintain the member 27 in rolling contact with the disk.

3. In a speed varying device, the combination with a driving shaft and a driven shaft, and a primary train of gearing to transmit the driving action, of a secondary train of gearing and means acting through said secondary train to modify the transmitt-ing action of the primary train, including a stationary member, a second member revolving about the first in rolling frictional contact therewith, and means to maintain the two members in rolling contact.

4. In a speed varying device, the combination with a driving shaft, a shaft driven therefrom, and a primary train of gearing to transmit the driving action, of a member revoluble about the axis of the driving shaft and having an axis of rotation parallel with the axis of said driving shaft, a stationary disk, the axis of which coincides .with that of the driving shaft, engaging the revoluble member and means to engage the revoluble member with said disk and permit difierent positions of the revoluble member to accommodate disks of different sizes.

5. In a speed varying device, the combination with a driving shaft, and a shaft driven therefrom, and a train of gears to transmit the driving action, including a gear 8 loose on the driving shaft, of a gear 17 coupled to the gear 8 and likewise loose on the driving shaft, a frame 18 secured to the driving shaft, a pinion 22, carried by the driving shaft, which meshes with the gear 17, a gear 23, and means acting through the pinion 22 and gear 23 to drive the gears 8 and 17 at a speed different from that of the driving shaft, including a revolving memher with an internal cylindrical surface and a disk to turn said member by rolling contact therewith.

6. In a speed varying device, the combination with a driving shaft and a shaftdriven therefrom and a primary train of gearing to transmit the driving action in cluding a gear 8 loose on the driving shaft, of a gear 17 also loose on the driving shaft and coupled to the gear 8, a frame 18 secured to the driving shaft, a shaft 21 carried by the frame 18, a pinion on said shaft engaging the gear 17, and a gear 23 conjoined with said pinion, a frame 26 mounted to swing on the shaft 21, and a shaft 25 carried by the frame, a pinion 2i on said shaft 25 engaging the gear 23, and means to operate the shaft 25 to impart to the gears 17 and 8 a speed difierent from that of the driving shaft 3 on which they are mounted including a stationary disk 30 co-axial with the driving shaft 3 and a member 27 on the shaft 25, revolved about the disk 30 by the driving shaft 3 and turned by rolling engagement of its internal surface with the periphery of the disk.

7. In a speed varying device, the combination with a driving shaft and shaft driven therefrom, and transmission connections between the two, of a stationary disk, a member having an interior surface and revolved by the driving shaft and rotated by engagement of its interior surface with the disk, and connections through which the rotation of said member acts upon the aforesaid transmission connections to modify the action of the driving shaft upon the driven shaft.

8. In a speed varying device, the combination with a driving shaft, and a shaft driven therefrom, and a train of gears to transmit the driving action, including a gear 8 loose on the driving shaft, of a gear 17 coupled to the gear 8 and likewise loose on the driving shaft, a frame 18 secured to the driving shaft, a pinion 22 carried by the frame 18 which meshes with the gear 17, a gear 23, and means acting through the pinion 22 and gear 23 to drive the gears 8 and 17 at a speed different from that of the driving shaft, including a revolving member, and a disk to turn said member by rolling engagement therewith.

In testimony whereof I aflix my signature in presence of two witnesses.

SIMON W. WARD VVELL.

Witnesses:

HAMILTON Bron, FERDINAND MARTIN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

